Abstract:
Modeling of wave propagation problems using finite element methods usually requires the truncation of the computation domain around the scatterer of interest. Absorbing boundary conditions are classically considered in order to avoid spurious reflections. In this paper, we investigate some properties of the Dirichlet to Neumann map posed on a spheroidal boundary in the context of the Helmholtz equation.
Key words:
Helmholtz equation, boundary value problem for second-order elliptic equation, wave propagation, scattering problems.
This publication is cited in the following 3 articles:
Hélène Barucq, Nathan Rouxelin, Sébastien Tordeux, “Low-order Prandtl-Glauert-Lorentz based Absorbing Boundary Conditions for solving the convected Helmholtz equation with Discontinuous Galerkin methods”, Journal of Computational Physics, 468 (2022), 111450
Hélène Barucq, Nathan Rouxelin, Sébastien Tordeux, “Low-Order Prandtl-Glauert-Lorentz Based Absorbing Boundary Conditions for Solving the Convected Helmholtz Equation with Discontinuous Galerkin Methods”, SSRN Journal, 2022
Barucq H., Fares M'Barek, Kruse C., Tordeux S., “Sparsified Discrete Wave Problem Involving a Radiation Condition on a Prolate Spheroidal Surface”, IMA J. Numer. Anal., 41:1 (2021), 315–343